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Finding the Fourth Proportional to 221,096.78, 305,114.57 and 125,608.71

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Solution

The fourth proportional to 221,096.78, 305,114.57 and 125,608.71 is: 173,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,096.78 : 305,114.57 = 125,608.71 : x
  2. Step 2: Convert to fraction form
    221,096.78/305,114.57 = 125,608.71/x
  3. Step 3: Cross multiply
    221,096.78x = 305,114.57 × 125,608.71
  4. Step 4: Simplify right side
    221,096.78x = 38,325,046,911.86
  5. Step 5: Solve for x
    x = 38,325,046,911.86/221,096.78
  6. Step 6: Final answer
    x = 173,340.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.